Box-stapling machine



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Filed sept. 17, 1945 Sept 20, 1949. A. RosENMuND 2,482,371

BOX-STAPLING MACHINE Filed sept. 17. 1945 9 sheets-sheet 2 Sept. 20, 1949. A. l.. RosENMuND 2,482,371

' Box-STAPLING MACHINE Filed sept. 17. 1945 9 sheets-sheet 3 DIN VEN TOR.

/leresa C. Rosen/w14 Adm/Afina tr/x Sept 20, 1949- A. L. RosENMuND 2,482,371

BOX-STAPLING MACHINE Filed Sept. 17. 1945 l 9 Sheets-Sheet 4 INVEN ToR. Alf/ed l Hase/:mani ec ea sed esa Cse/mund, Adm/Astra tri/x sept. 2o, 1949.

A. l.. Rosi-:NMUND 2,482,371

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Sept, 20, 1949. A. L. Rosx-:NMUND BOXjSTAPLING MACHINE 9 Sheets-Sheetv 6 Filed Sept. 17, 1945 IN VEN TOR. .fe/)mand ecasad dn//z/stra tr/x dL. Fig 'Uff-esel: C fregna/1 A. L. ROSENMUND BOX-STAPLING MACHINE Sept. 2o, 1949.

Filed Sept. 17, 1945 9 Sheets-Sheet 7 NV Tok ,fl/fred Roser/mgm; ecelasel?l Eel-esa C'. Rosen/hund, Azmf/l/lstratr/x Sept. 20, 1949.. A. L. RosENMUND BOX-STAPLING MACHINE 9 Sheets-Sheet 8 Filed Sept. 17, 1945 INVENToR.

nd Adm/'n/'sfmlr/k 35% 4MM-e ATTORNEY Alfred L. Rosenmungfemsed v Theresa C. Rose/:mu BY 2W-M Wanellle e anla a ma o avgw A kw mw m RS ..J b. mm. v nvn \\|KN\ K H QQ L.. -26S L S (w 6 u. n G vw MG/Nwf .WS v n an?? h v a kv ,:mv A a E E A. L. ROSENMUND BOX-STAPLING MACHINE Sept. 2o, 1949.y

9 Sheets-Sheet 9 Filed sept. 1v. 1945 Patented Sept. 20, 1949 Box-STAPLmG MACHINE Alfred L. Rosenmund, deceased, late of Woodport, N. J., by TheresaC. Rosenmund, administratrix, Woodport, N. J., assig'nor to Stapling Machines Co., a corporation of Delaware Application September 17, 1945, Serial No. 616,789

l Y. This invention relates to a carriage having a controlled reversible movement, and particularly to such a carriage constructed and arranged to -cooperate with a pattern of controlling members to control the operations of operation-performing parts (for example, the stapling mechanism) of a box-stapling machine.

It is an object of the invention to provide an improvement in the type of machine shown in United States Patent No. 2,304,510 of December 8, 1942.

It is a further object of the invention to provide an improved mechanism to control the operations of the stapling mechanism of said patent, comprsing a rock bar having a pattern of controlling members arranged thereon, an endless chain driven in synchronism with the linear travel of the work conveyer bands of the stapling machine, and a reciprocating carriage arranged to travel in alternate directions, through the intermittent operation of magnetically controlled transmission couplings arranged to alternately couple the carriage to the forward and reverse runs of the .endless chain, the movement of the reciprocating chine and the changing of the set-up for diiierent size boxes.

Another object of the invention is to provide a pattern-controlling mechanism for the stapling mechanism, wherein the switches for starting and stopping the stapling mechanism are controlled by a traveling carriage mounted to move over a track and alternately coupled to move in one direction and then in the opposite direction by means of sprocket gears arranged to be locked alternately to the forward and reverse runs of an endless chain, through the action of magnetic couplings which, when energized, prevent the rotation of the sprocket gear subject to magnetic attraction.

A furtherobject of the invention is to providemeans operated by the end movement of the reciprocating carriage, which will automatically rock the rock bar carrying the controlling members, so that rst one series of controlling members will'be moved into the path of the carriage, and then a. second series will be moved into the path of the carriage, and finally the rock bar will be restored to initial position.

A further object of the invention is to provide means for automatically producing relative reciprocating movement between a series of pattern controlling members and a control switch .,con trolling the operation of operation performing mechanism of a box-making machine, thereby to correlate the operation of the operation performing part with movement of box units continually supplied to the box-inaking machine.

With the above and other objects in view, the invention relates to certain new and useful constructions, combinations, and arrangements of parts, clearly described in the following specification and fully illustrated in the accompanying drawings, in which:

Figure 1 is a plan view of the reciprocating carriage, broken away for convenience of illustration.

Fig. 2 is a plan view of the reciprocating carriage, on an enlarged scale.

Fig. 3 is a transverse sectional view, taken on line 3 3 of Fig. 1, looking in the direction of the arrows.

Fig. 4 is a side elevation, taken on line 4-4 of Fig. 2, looking in the direction of the arrows and showing one of the magnetic transmission couplings and thev turnstile-operated switch.

Fig. 5 is a vertical sectional view, taken on line 5 5 of Fig. 2, looking in the direction of the arrows, showing the cam head of the turnstile switch. Y

Fig. 6 is an enlarged plan view, showing the stop switch and one of the levers for operating the pattern rock bar.

Fig. 'l is a fragmentary side elevation taken on the line 'l-'l'of Fig. 1.

Fig. 8 is a fragmentary plan view, showing the other rock bar operating lever, taken on an enlarged scale.

Fig. 9 is a side elevation of one unit for operating the rock bar, taken on line 9-9 of Fig. 1, looking in the direction of the arrows, and shown on an enlarged scale. A

Fig. 10 -is a detail perspective view, showing the position of one of the end shifter arms and the shifter lever it engages, and the rock bar.

Fig. 11 is a similar view, showing the other shifter arm and the shifter lever it engages, and

, the rock bar.

Fig. 12 is avdiagrammatic View, showingk the composite electrical circuit of the carriage switches and the stationary stop switch, together with the starting switch of the stapling-machineoperating circuit.

Fig. 13 is a diagrammatic side elevation of a box'istapling machine embodying the invention.

Fig. 14 is a top plan view of the machine on a larger scale with certain partsiomitted for clearness ofillustration, and showing the assembled relation of the staple pattern control mechanism to the rest of the machine.

Fig. 15 is a side elevation of a portion of the machine viewed from the line I-I5 in Fig. 14 with -certain parts omitted for clearness of illustration and showing the stapling mechanism and the means for driving the pattern chain of the staple control mechanism.

In the machine of said Patent No. 2,304,510, the operations of the stapling mechanism are controlled by a switch which energizes and deenergizes a solenoid. In said machine, the switch is operated by a rocking bar which, when rocked in one direction closes the switch, and when rocked in the other direction opens the switch. The bar is rocked by members carried by one of the work-conveyer bands of the stapling machine cooperating with members secured to the rocking bar.

The present invention is intended to energize and deenergize the solenoid through a switch carried by a reciprocating carriage located remote from the work-conveyer bands of the machine;

said switch being operated through a rotatable cam, the rotating movement of which is controlled by a pattern of controlling members selectively presented in the path of cam-rotating means carried by and .movable with the reversing carriage.

The several elements of the controlling mechanism of this invention may be supported by or secured to a frame or table I which may be formed as a part of the framework of the stapling machine.

The reciprocating carriage and the endless chain for moving the carriage, first in one direc' tion and then in the other direction, are best shown in Figs. 1 and 3.

An endless multiple-link chain 5 engages a driven pulley 6 and an idler pulley 1, supported for rotation on vertical shafts 6a and 1a, respectively. These shafts are supported by the frame I and are spaced apart from each other to establish the length of the travel of one run or side of the endless chain. One run or side 5a of the endless chain travels over a track or guide 9, and the other run or side 5b travels over a track or guide Il. The two chain runs or sides travel in a common horizontal plane, in parallel relation to each other, and the tracks or guides 9 and II are arranged in parallel relation to each other and in a commonhorizontal plane. The outer ends of the tracks cr guides 9 and II are spaced inwardly of the driven and idler pulleys 6 and 1.

A carriage I2 is provided with a base I3, which is formed with a channel or groove I3a to receive the chain run 5a, and another and parallel channel or groove I3b to receive the chain run 5b. This base I3 slidably engages the upper horizontal surfaces of the parallel tracks 9 and II, and is equipped with an intermediate pendant bar or member I4 whichslides between the opposing inner sides of the tracks or guides 9 and II. A

plate l5 is connected to the lower end of the pendant bar I4, by means of the bolts I6. and engages "the shoulders 9a and IIa of the tracks 9 and II,

4 and provides a runner for the carriage, and also serves to hold it in position against displacement.

The carriage I2 is provided with a cross frame member I1, which is equipped on one end with a vertical shaft I 8, which turns in a bearing provided in the cross frame member, and which is provided with a sprocket wheel I9 on its lower end, which meshes with the chain run 5a. The upper end of the shaft I8 extends above the cross frame member I1 and is equipped with a magnetic clutch disc 20. The other end of the cross frame member I1 carries a vertical shaft 2|, the lower end of which is provided with a sprocket wheel 22, which meshes with the chain run 5b. The upper end of this shaft is equipped with a magnetic clutch disc 23.

A vertical frame member 24 extends from the cross frame member I1, to support an upper cross frame bar or member 25 above the clutch discs 20 and 23. One end of the cross bar or member 25 is equipped with an electrical magnet 26, which is provided with a circular pole piece 21, which is disposed in concentric relation to the clutch disc 20 and spaced slightly therefrom so as to be out of frictional contact with it. The opposite end of the cross bar or member 25 supports a companion electrical magnet 28 (Fig. 4) which is provided with a circular pole piece 29, disposed in concentric relation to the clutch disc 23 and spaced out of frictional engagement with it. Electrical power is furnished for operation of magnets 26 and 28 from a transformer-rectifier unit 69 through circuit connections, as clearly shown in the wiring diagram, Fig. 12.

As shown in Fig. 3, binding posts 26a and 26h are provided for the electrical magnet 26, and binding posts 28a and 28h are provided for the electrical magnet 28. 'I'he upper cross frame bar 25 is equipped with a switch box 30, in which switch plungers 3| and 32 (Fig. 12) Work from opposite vertical sides of the switch box. The inner ends of these switch plungers engage the intermediate switch member 33, which is shifted back and forth between stationary switch contacts 34 and 35, enclosed by the switch box.

The carriage I2 also carries another switch box 36 (Fig. 3) which is supported by a frame member 31. A vertical switch plunger 38 works through the bottom wall of switch box 36. The lower end of switch plunger 38 rests upon a spring bar or strip 39, which is mounted on a horizontal extension 40 (Figure 5). A cam head'4l, mounted to run on a stud shaft 42, is located immediately below the free yielding end of the spring strip 39, so as to successively raise this free end and -thereby`lift the vertical switch plunger 38. As shown in Fig. 5, the cam head 4I is formed with a series of low points 4Ia and a series of high points 4Ib, which determine the lifting action of the cam head on the vertical switch plunger 88.

As shown in Fig. 3. the cam head 4I is formed on or carried by a hub 43 of a sprocket wheel 44,

which turns on the stud shaft 42. Teeth 44a of the sprocket wheel 44 are disposed in position to successively engage controlling members 45 of a lower rock bar member 46 when said rock bar member is rocked into engagement with the Asprocket wheel, and to engage controlling members 41 of an upper rock bar member 48 when said rock bar member is rocked into engagement with the sprocket wheel. The rock bar members 46 and 48 are carried by support blocks 49, which are pivotally supported on stationary arms 50,

so as to permit' up and down rocking of rock bar members 48 and 48 to bring the lower row of controlling members 45 into the path of the teeth 44a of the sprocket wheel, and then to bring the upper row of controlling members 41 into the path of the teeth 44a of said sprocket wheel.

As shown in Fig. 1, one side of the carriage I2 is equipped with a shifter arm 5I, which is provided with an offset end portion 52. This shifter arm is disposed in position to engage the convex curved side of a horizontal shifter lever 53, which is pivotally supportedon a bearing 54 of a bracket 55 (Figure '7). The lever 53 projects outwardly from its pivot support at 54, and this outward portion is engaged by one end of a pull spring 56, the other end of which is connected to the bracket 55. Adjacent to the bracket 55, an ad justable stop pin or arm 51 is arranged, which is adapted to engage the switch plunger 3l. Adjacent to the adjustable stop pin 51, a switch plunger 58 is disposed so that it faces toward the carriage I2, and this plunger is slidable in a switch housing 59. The shifter lever 53, bracket 55, pull spring 56, adjustable pin 51, switch plunger 58, and switch housing 59 are adjustably clamped on the parallel tracks or guides 9 and Il. 'I'he switch plunger 58 is engaged by the side of the carriage I2 to open the contacts in switch housing 59.

The other side of the carriage is equipped with a shifter arm 60, which ls adapted to engage the convex curved end 6 la of a shifter lever 6 I, which is pivoted at 62 on a bracket 63. The shifter lever 6I projects outwardly of the pivot 62 and isengaged by one end of a pull spring 64, the other end of which is connected to a bracket arm 65. The two bracket arms are adjustably clamped Vto the tracks or guides 9 and II. A support lug 66 is connected to the brackets 63 and 65, and an adjustable pin stop 61' is threaded into this lug so as to engage the switch plunger 32 of the carriage.

The controlling members 41 of the rock bar 48 control one-half of the complete pattern for the stapling of one unit of work, and the controlling members 45 controlrthe other half of said pattern.

When the carriage I2 in its travel to the right (Fig. 1). reaches the point where the shifter arm 5I engages and moves-the lever 53 against cam block 1U on rock bar 46, the bars 46 and 48. will be rocked in one direction; yand when the carriage I2, in its travel to the left, reaches the point where the shifter arm 60 engages and moves the lever 6I against cam block 1I on rock bar 48, the bars 46 and 48 will be rocked in the opposite direction.

The rocking of each of the levers 53 and 6I takesplace `once during each cycle of the operation of the carriage I2. This rocking brings all of the controlling members 45 and 41 into the path of the teeth 44a of the sprocket wheel 44, so that each controlling member, in turn, may operate to turn the cam head 4I and successively operate.

through the electrical magnet 28; and the switch plunger 32 controls the circuit, through the electrical magnetl 28. When the magnet 26 is energized, the sprocket wheel I9 will be prevented from turning, by reason of the magnetic attraction of the clutch disc 20 by the magnet pole piece 21. The sprocket wheel I9 will then become atransmission coupling for coupling the carriage I2 to the run 5a of the endless chain 5, so that the carriage I'2 will move in the direction of the travel of the chain run 5a. When the carriage reaches a point near the end of this travel, the switch 32 will automatically close the circuit through the electrical magnet 28, .and the circuit through the magnet-26 will be broken. When the magnet 28 is energized, the magnetic disc 23 will be attracted by the magnet 28, and the sprocket wheel 22 will be locked magnetically against turning, causing the teeth of the sprocket wheel 22 to act as a transmission coupling to couple the carriage I2 to the chain run 5b of the endless chain 5. The carriage will then travel in the direction of this run. It is understood that the direction of travel of the endless chain 5 is never changed, and that the reversing of the carriage travel is due to the alternate coupling of the carriage with the two runs of the chain, which are in opposite directions.

A start switch 68, containing a normally open contact, is located adjacent to the conveying means of the automatic stapling machine and is connected electrically in parallel with stop switch 59, as shown in Figs. 12 and 14. The lead block l of each box set-up on the conveyers momentarily actuates switch 68 to close the circuit through magnet 26, thereby coupling the sprocket wheel I9 to the chain run 5a, and starting the carriage in motion. As the carriage moves away from switch plunger 58, the contacts are closed through stop switch 59, and magnet 26 remains energized, although the start switch is no longer held in closed position by the box-part conveying means. As the carriage moves, the teeth 44a of the sprocket wheel 44 will engage controlling mem'- bers 41 of the upper rock bar member 48 in succession, thereby successively operating the switch in housing 36 and starting and stopping the automatic stapling mechanism of the box-making machine. The timing for the operation of the switch of housing 36 is controlled by the time period established by the turning of the cam head 4I against the spring strip 39, to raise and lower the switch plunger 38. Thus, the timing of the stapling mechanism is governed by the spacing of control members 41.

When the carriage reaches the end of its travel in the direction it has been moving, the shifter arm 60 will operate the shifter lever 6I and the rock bars 46 and 48 will be rocked, so that the lower series of controlling members 45 will be moved into the path of the teeth 44a of the sprocket wheel 44. At the same time, the stop pin 61 will engage the switch plunger 32 to open the circuit through the magnet 26 and to close the circuit through the magnet 28. This will release the sprocket I9 to turn with the chain 5, and at the same time couple the sprocket 22 to the chain run 5b to start the carriage on its return trip. As the carriage moves on its return trip, the lower series of controlling members 45 will be successively engaged by the teeth 44a of the sprocket 44,. and the stapling machine controlling switch 36 will be intermittently operated, alternately to start and stop the stapling mechanism, so that the second series of staples required to completely staple the box assembly or unit of work will be applied in accordance with the spacing of the controlling members 45.

When the carriage |2 reaches its starting position, the switch plunger 3| is engaged by the stop pin 51, and the switch of the housing 30 is automatically reset by switch plunger 3| urging the intermediate switch member 33 into its initial position as shown in Fig. 12. At the same time, the stop switch 50 is opened, which automatically breaks the circuits of both magnets. By closing the starting switch 68 again, the carriage will repeat its cycle, moving first in coupled engagement with one run of the constantly traveling endless chain, and then in coupled engagement with the other run of the chain, by an automatic reversing operation completed by the end switch operation.

The improved remote-control staple-patterndetermining mechanism utilizes a rock bar and the adjustable controlling members, but the rock bar is not operated by elements carried by the conveyer bands, or operated indirectly by the conveyer bands, and, as a result, the design of the conveyer bands is entirely freed of the design and timing of the pattern rock bar. This permits of a simplication of conveyer band construction and set-up and relieves these bands of a mechanical burden.

The pattern bar of the improved mechanism permits of adjustment of the pattern controlling members to meet various operating requirements, and this adjustment is in no way dependent upon the length or detail construction or'accessories of the conveyer bands which move the box vparts through the stapling mechanism.

Individual pattern bar units may be thus provided for each size and type of box assembly and patterns of many kinds standardized for the boxmaking machine with a minimum of adjustments.

The endless chain is driven by suitable transmission mechanism from the mechanism which drives the conveyer bands of the stapling machine. This transmission mechanism may consist of a transfer chain or its equivalent drive.

Reference is made to said United States Patent No. 2,304,510 for a detailed description of the stapling mechanism, the operation of the solenoid' in starting and stopping the stapling mechanism, the conveyers for the box parts, and the mechanism for moving the conveyers. As heretofore stated, the present invention is directed to a pattern mechanism for controlling the operations of said solenoid to control the operations of said stapling mechanism.

As shown in Fig. 14, conveyer bands |02 and |03 are trained over driven sprocket wheels' |20, keyed to a shaft ||9 at one end of the machine, and over idler sprocket wheels 20a rotatably mounted on a shaft ||9a at the other end of the machine. Driven sprocket wheels |20 are rotated from a motor by suitable driving means shown in Figs. 13 and 14, and fully described in said Patent Number 2,304,510.

As shown in Figs. 14 and 15, chain 5 of the remote control staple pattern mechanism is driven at the same rate of speed as the conveyer bands |02 and |03 by a driving mechanism comprising, a drive sprocket |23 keyed to shaft IIS, a chain |24, a sprocket |25 on a shaft |26, a sprocket |21 also on shaft |20,`a chain |20, a sprocket |29, beyeled gears |30 and |3|, shaft 5a, and driven sprocket 0.

The stapling mechanism |32 (Fig. 15) and its manner of operation through the solenoid |35 (Figs. 13 and 14), are fully shown and described 8 in said Patent Number 2,304,510, and need not be described in detail herein.

As shown in Figs. 14 and 15, the start switch 50 with normally open contact, is secured at apredetermined point adjacent to the conveyer band |02.at the left side of the machine, and is connected electrically in parallel with the stop switch 50 as stated.. The start switch 60 is provided with an upwardly projecting angular rock -bar |35. the purpose of which is to actuate the start switch` 68 to function at the proper time.

With the leading edge |31 of the box set-up positioned against the lead block |30 (see Fig. 15) and moved by the conveyer band |02 in the direction indicated by the arrow, the lead block |38 will contact and urge downwardly the angular rock bar |36 to cause the normally open contact of the start switch 68 to close, thereby energizing the magnet 26 to begin the initial half cycle or run of the carriage I2, during which staples are driven into one-half the length of the box set-up. At this point of the cycle, the magnet 28 is energized by the engagement of the switch plunger 32 with the adjustable-.pin stop 61, thereby causing the carriage |2 to reverse its direction of travel and return to its initial position adjacent the stop switch 59. During the reverse travel. staples are driven in the remaining half of the box set-up. As hereinbefore explained, the stapler heads |32 are controlled by the energizing and de-energizing of the solenoid |35, and,

since the solenoid is connected electrically with the switch 36, actuation of the switch 35 controls the operations of the solenoid and the stapling mechanism.

At the termination of one complete cycle of travel by the carriage I2, it contacts the switch plunger 58 to open the contact of stop switch 59. causing the carriage to rest until the next following lead block |38, secured on the conveyer band |02, actuates the start switch 68 which in turn will energize the magnet 26 through the switch 30, it having been automatically reset by engagement of the switch plunger 3| with the adjustable pin stop 5l.

The remote control staple pattern mechanism, as illustrated, provides for the stapling of one unit of work or box set-up during one complete cycle of travel of the carriage I2 caused by each succeeding lead block |38 actuating the start switch 68 to drive staples into their individual units of work.

It wil1 be understood that the invention is not to be limited to the specific embodiment shown for illustration.

It is claimed:

1. A staple-pattern controlling mechanism for box-stapling machines, comprising an endless chain having a forward and a reverse run disposed in a common plane, a track disposed in parallel relation to the chain, a drive for maintaining the chain in motion, a carriage slidable on the track, said carriage having a magnetically operated coupling for coupling the same to either run of the chain, and a, reversing switch for operating said coupling to couple the carriage to one run and then to the other run of the chain.

2. A controlling mechanism for controlling an operation performing mechanism of a boxstapling machine, comprising an endless drive chain, a carriage having a clutch mechanism for coupling the carriage alternately with the separate runs of the chain, and a switch carried by the carriage for controlling the intermittent opera- 9 tion of the operation performing mechanism of the machine.

3. A controlling mechanism for controlling an operation performing mechanism of a boxstapling machine, comprising a reciprocating carriage; a series oi' selectively arranged patterndetermining yelements disposed in parallel relation to the movement of the carriage, and a switch on the carriage adapted to be operated successively by the elements.

4. An automatic control for controlling the operationofan operation performing mechanism of a box-making machine, comprising a rotary member and a switch arranged to be successively operated by the rotary member, a drive for reciprocating the rotary member and the switch, and a series of pattern-determing elements disposed in the path of the rotary member and arranged successively, to actuate said rotary member.

5. An automatic control for controlling th operation of an operation performing mechanism of a box-making machine, comprising a switch, a rotary member having a, series of cam faces for successively actuating the switch, said rotary member having a toothed wheel, a series of pattern-determining elements disposed to act successively on the teeth of the wheel, and a drive for moving the rotary member and the switch across the elements to cause the switch to be actuated -in the order of the arrangement of the pattern-determining elements.

6. An automatic control for controlling the operation of an operation performing mechanism of a box-making machine, comprising a switch, a toothed wheel having a head provided with a series of cam faces arranged to successively actuate the switch, a series of pattern-determining elements disposed in position for successive engagement by the teeth of the wheel, and a drive for reciprocating the switch and toothed wheel across said elements to cause said elements to successively actuate the switch in the order of thel arrangement of said pattern-determining elements.

7. A control mechanism for controlling an operation of an operation performing mechanism of y a box-making machine, consisting of a conveyer,

a track disposed in parallel relation to the conveyer, a carriage slidable over the track, a transmission coupling carried by the carriage and adapted to engage the conveyer, a magnetic clutch carried by the carriage for causing the coupling to couple the carriage to the conveyer, and a switch carried by the carriage for breaking the circuit through the magnetic clutch whereby said carriage is uncoupled from the conveyer.

8. A control mechanism for controlling an operation of an operation performing mechanism of a box-making machine, comprising a track, an endless conveyer having runs moving in opposite directions in parallel relation to the itrack, a carriage slidable on the track, a rotary wheel mounted on the carriage to engage one run of the conveyer, another rotary wheel mounted on the carriage to engage the other run of the conveyer, magnetic clutches on the carriage for locking each rotary wheel against rotation, a switch on the carriage for alternately energizing the magnetic clutches, and means located adjacent the ends of the track for operating the switch to cause said magnetic clutches to release one of said wheels for rotation and to lock the other wheel against rotation whereby the carriage will be caused to travel in both directions in coupled relation to the separate runs of the conveyer.

9. A control mechanism for controlling an operation of an operation performing mechanism of a box-making machine, comprising a track, an endless conveyer having runs moving in opposite directions and in parallel relation to said track, a carriage slidable on the track, a transmission coupling carried by the carriage to engage one run of the conveyer, a similar transmission coupling carried by the carriage'to engage the other run of the conveyer, a magnetic clutch on the carriage for locking one transmission coupling in coupled relation to its conveyer run, a magnetic clutch carried by the carriage for locking the other transmission coupling in coupled relation to its conveyer run, a switch carried by the carriage arranged toaIternately energize said magnetic clutches and to deenergize the same, and switch operating means disposed in the path of the movement of the carriage for operating said switch to cause Ithe carriage to reverse the direction of 'its travel at the end of travel in one direction.

10. A control mechanism for controlling an operation of an operation performing mechanism of a box-making machine, comprising an automatic V self-reversing carriage, a series of pattern-controlling elements disposed in parallel relation'to the direction `of travel of the carriage, and a circuit-controlling switch carried by the carriage and arranged to be successively operated by the elements to closev and open the circuit thereof in a manner corresponding to the disposition of said elements.

11. A control mechanism for controlling an operation of an operation performing mechanism of a box-making machine, comprising a member carrying a series of pattern controlling elements, a switch, a switch operating part for operating the switch by successive engagement with the pattern controlling elements, and a drive for reciprocating the switch and its operating part to cause the pattern controlling elements to actuate the switch operating part in the order of their own pattern disposition.

12. A control mechanism for controlling an operation of an operation performing mechanism of a box-making machine, comprising a rock bar having a plurality of pattern determining elements arranged in parallel rows, a reciprocating carriage, a switch carried by the carriage. a switch operalting part for the switch also carried by the carriage and adapted to operate the switch when engaged by one of said elements, a track on which the carriage is arranged to travel in a direction parallel to said pattern determining elements, a drive for reciprocating the carriage on Ithe track, the track and the carriage being provided with cooperating shifting levers at each end thereof, adapted at each end of the carriage travel to rock .the rock bar to bring one row of pattern determining elements into position to engage the switch operating part, and to bring the other row of pattern determining elements out of such position.

13. Means for controlling the operation of an operation performing mechanism of a box-making machine, comprising a movable carriage, a switch carried thereby and adapted to start and stop the operation of the operation performing mechanism, a switch operating part carried by the carriage, a drive to move the carriage, and a series of selectively spaced controlling members the carriage. a drive to impart a reciprocating movement to the carriage, a series of controlling members movable into positionto actuate the switch operating part on movement of the carriage in one direction, and a second series of controlling members movable into' position to actuate the switch operating part on movement of the carriage in the other direction.

15. A reciprocating carriage, comprising an endless chain having a forward and reverse rn disposed in a common plane, a track disposed in parallel relation to the chain, a drive for maintaining the chain in motion, a carriage slidable on the track, said carriage having magnetically operated coupling mechanism for coupling the same to either run of the chain, and a reversing switch for operating said coupling mechanism to couple the carriage to one run and then to the l other run of the chain.

16. A pattern controlling mechanism for boxmaking machines, comprising, a reciprocating carriage, a pair of series of selectively arranged pattern determining elements disposed in parallel relation to the movement of thecarriaga a switch on the carriage, and a switch operating part for the switch actuated successivelyv by contact with the elements of one "seriesof elements when the carriage is moved in one direction, and by contact with` the elements of the other series of elements when the carriage is moved in the other direction.

17. In a box-making machine, control mechanism for controlling the operation of anA operation performing mechanism thereof comprising, a member carrying a series of pattern controlling elements, a switch for controlling the operation of said operation performing mechanism, a switch operating member associated with said switch and operated by successive engagement withV the pattern controlling elements, and a drive for producing relative reciprocating motion between the operating member and the pattern controlling elements thereby to actuate theswitch operating member in the order of the disposition of the pattern controlling elements.

18. An automatic control for controlling the operation of an operation performing mechanism of a box-making machine comprising, a switch, a rotary member having a series of cam faces for successively actuating .the switch, said rotary member having a toothed wheel, a series of pattern controlling elements disposed to act successively on theteeth of thewheel, and a drive for producing .relative motion between the rotary member and the pattern controlling elements to cause the elements successively to act on the teeth of the wheel thereby to actuate the switch in the order of the arrangement of the pattern controlling elements.

5 19. An automatic control for controlling the operation of an operation performing mechanism of a box-making machine comprising, a switch.-

member having a toothed wheel, a series of pattern controlling elements disposed to act successively on the teeth of the wheel, and a drive for producing relative motion between the rotary member and the pattern controlling elements to cause the elements successively to act von the teeth of the wheel thereby to actuate the switch in the order of the arrangement of the pattern controlling elements, a continuously running endless conveyor for conveying box parts to the boxmaking machine, a starting switch for conditioning said drive to produce said relative motion, a starting member carried by said conveyor for operating said starting switch, a stopping switch for conditioning said drive to stop said relative motion, and an operating member moved by Said relative motion to operate said stopping switch to condition said drive to stop said relative motion.

20. An automatic controller for controlling the operation of an operation performing mechanism 30, of a box-making machine comprising, a switch for starting andsstopping the operation of said operation performing mechanism, a rotary cam having a series of high and low points evenly distributed therearound and serving upon rotation to operate said switch to its opened and closed positions, a toothed wheel mechanically connected with said rotary cam to rotate the same, a series of pattern controlling elements'disposed to act successively on the-teeth of the Wheel 40 to impart stepwise rotation thereof upon relative movement between said pattern controlling elements and said wheel, thereby to impart stepwise rotation to said rotary cam and actuate said switch in the order of the arrangement of the pattern controlling elements, and a spring operated part urged against said rotary cam to position said toothed wheel for operation by a following pattern controlling element after operation by the preceding pattern controlling element.

THERESA C. ROSENMUND. Administratri of the Estate of Alfred L. Rosenmund, Deceased.

REFERENCES CITED The following references are of record in the ille of this patent:

'UNITED STATES PATENTS Rosenmund Dec. 8, 1942 

